Diodes Incorporated PI4IOE5V6416RQ The Diodes Incorporated PI4IOE5V6416RQ I/O expander is a 16-bit universal I/O expander that provides remote I/O expansion through an I2C bus interface for most microcontroller families. When additional I/O is required, the I/O extender provides a simple solution while minimizing interconnection.
Pin Configuration
The PI4IOE5V6416RQ I/O extender has bidirectional voltage level conversion provided by the VDD(I2C_bus), which should be connected to the VDD of the external SCL/SDA line. The I/O extender has an open interrupt INT output pin that changes to low when the input state of the GPIO port changes from the input state default register value.
The PI4IOE5V6416RQ I/O expander also features interrupt masking, which allows users to mask interrupts from a separate GPIO port. The I/O expander supports AEC-Q100 (Stage 2) and is completely lead-free and RoHS compliant. The I/O extender is ideal for sensor, button, keyboard, and battery powered mobile applications (for connectivity).
Block Diagram
Features
● Comply with I2C bus fast and standard mode
● Programmable push-pull/leak-open output stage
● Programmable output drive strength and pull-up/pull-down resistors
● Power-on resets all register contents to default values
● Low level active leak interrupt output
● The low level effectively resets the input, resetting the I2C bus only if the register contents remain unchanged
● Pass latch test (over 100mA)
● Support AEC-Q100 (Level 2)
● lead-free
● Comply with the RoHS directive
● Free of halogens and antimony
Applications
● Sensor
● Button
● Keyboard
● Battery powered mobile application for connection
